speed sensor

I recently purchased a 1999 grand caravan with the 3.8 AWD, today the service engine light came on and I could hear relays clicking like crazy and the trans. acted pretty weird so I got the codes read and they came out as, p0500 vehicle speed sensor malfunction and p1698 pcm fault no ccd messages from tcm. My question is what is it going to take to fix this problem, do I just change the speed sensor or is this going to turn into a major project? any help with this will be very greatly appreciated.

Thanks
Mark

I am just wondering if anyone knows where the speed sensors and transmission control module are located on th trans.

Thanks

more than likely, your output speed sensor has failed, it's a circular shaped object located towards the LF tire. As far as the TCM, it's located on the firewall, it's a black box with a nut in the center for the electrical connector. If you have a communication code, make sure your wires going from the TCM and PCM are intact, are not corroded and have no open or shorted wires.

I have exactly the same vehicle. The speed sensors are located on the front of the transmission, either side of the solenoid pack, near the trans cooling lines. You have to remove the battery and air box to get at them. Once that is done, they are pretty easy to replace, just make sure you ahve the correct sized socket to extract them. I would do both of them as chances are if one is faulty the other will follow.

just wanted to let everyone know that I tightend the wires on the tcm on the 22nd and everything cleared up,I have since driven approx. 400 miles with no further trouble. I will keep these sensors on hand though just in case.Thank you guys very much you have saved from having to take it to the shop and I appreciate it.


Thanks
Mark

ok it started doing it again yesterday so Irecheched all the wiresand that didn't work so I replaced the output sensor and have the input sensor ordered and will recieve it in the morning, what should I do next? I'm thinking about changing the tcm but I'm wondering if there is something else that I should do first as the cost at the local dealer is $230+core I am also taking it tomorrow to have it flushed and filter replaced. I would appreciate any help

thanks

where is the pcm located?
thanks

I have now changed the input and output speed sensors and there is no change.I am now going to the dealer to order the tcm, any suggestions would be great

thanks

check ignition switch do all your prnd32 lamps stay highlighted or light up

o.k. I have changed the input sensor,output sensor, the transmission control module,and I took it yesterday to the local dealer to have them do a quick learn but they said my van wouldn't accept it because my tranny wasn't communicating with the tcm which means that the tcm wasn't the problem.
please,please help with this

o.k. I have changed the input sensor,output sensor, the transmission control module,and I took it yesterday to the local dealer to have them do a quick learn but they said my van wouldn't accept it because my tranny wasn't communicating with the tcm which means that the tcm wasn't the problem.
please,please help with this


Has this issue been resolved, if so, what was the problem.

Thanks

actually this is still an issue so it is just sitting in the driveway until I can afford to go to the dealer. I'm just really nervous about the dealer in this town as they are known for doing expensive repairs before doing the actual repair that was needed. I personally think that it is a ground problem but I can't seem to find all of the ground wires.

i notice people on here being told to change output speed sensors.
If you have a overdrive transmission and your speedo quits,and your trans act's funny change it.If your speedo does not quit when your trans is acting funny;;';;;;;;;;;;;their is nothing wrong with it!
people on here are giving advice about stuff they no nothing about..
caravans don't have alot of wiring problems.they have some shafing of wires atthe front of the trans where the wires cross in front of the pan.these can be repaired easily enough even by a shade tree.Don't just expect your trans to be shot because it's not working right.If you take it to the dealer you will be charged probaly a minimum of 3/4 hour to diagnose your problem.if the trans is the problem you will no it!
You drop your vehicle off at a trans shop or salvage yard ,how do you know.they call and say we installed your trans and you still have something wrong although it's not the original problem we think were going to have to put a new pcm ,tcm, or tuneup on your vehicle to get it working right before we gaurantee the trans.What do you do?The rock and the hard place come to mind.......................you say yes./you have no choice.the money has beeen spent;i'm in to deep it has to work.


Does this sound familiar?
Yes ,i work for a chrysler dealer;but guess what.I am a liscensed transmission rebuilder,and have been since 1992.I do all transmissions domestic and foreign and put quality before quantity..........terry

actually my speedo did quit and the trans is stuck in limp, I have changed the speed sensors and the tcm to no avail.I am still getting the same codes p0500 and p1698.I would much rather fix it myself but I don't know what to try next.I thought about changing the solenoid pack but I don't want to change something else for nothing.

my question is do u have a remote starter? my code is 1698

no remote starter, just keyless entry and still have not found the problem. Now I'm noticing that my fuel guage and the trip computer are also giving me false readings.If anyone has any more ideas my wife would sure appreciate not having to drive around in an 81 toyota pickup. please,please give me ideas

Mark, since you continue to have communication problem and a code for your speed sensor, and the speedo not working, I'd have the connection between the TCM and the speedo checked, make sure at your instrument cluster is intact, that will cause a communication code. If that's ok, check your wiring harness from the tranny to the TCM.

I will do that today,Thanks alot freak I really appreciate your help and I'll let you know what I find.

I have a question (dont mean to hijack your thread, but kind of a similar issue) would the speed sensor wiring go through the engine computer???? The reason I ask, I have a 95 Caravan, with the 3.0 and 3 speed transmission, and the Speedo reads too high, when it says you are going 80 you are actually going 70, now I have replaced the sensor, and even replaced the cluster (not entirly because of that problem, I had one with all gauges) but it read that way with either cluster. I am at the point now where im thinking that the computer may have been taken out of a vehicle that was calibrated for KPH instead of MPH.

After reading all the work you have done to yours, Im kind of curious what the problem is, A friend of mine just bought a Caravan with the 3.3 and the 4 speed, and I am sure I will have to work on it for her eventually.

was this resolved? Instrument cluster? I am also having similar problems, intermittently the gauges will die (bang on the dash usually brings em back but not always) and sometimes the van just wont start for maybe 24 hours.
Last time my gauges went out I brought them back and then the check engine light came on. Had the codes read and came up with a bad O2 sensor and p1698- no ccd from tcm and the reader said something about aux in-out.

btw just had the van tuned up at dealership and Bcm replaced ($$$$)

Hi.
I´ve got a 2000 LX Grand Voyager, living in Stockholm, Sweden.
I got the same problem yesterday; Funny acting fuel gauge,
and non working speed meter.
I have checked a bunch of connectors, and I am now very interested in knowing how your problem was solved? If it´s solved?
Please reply.
Regards from Stockholm

I have a 1999 AWD.How many miles/Kms aree on the vehicle and do you know if the solenoid pack ahs ever been replaced?

When I bought mine about 3 years ago the tranny kept going into limp mode, took the vehicle to Chrysler and it was showing an electrical fault as they could not clear the code. Took it to a tranny shop they advised the tramnsmission needed repacing.

Took it for a second opinion and this tranny guy I found put a new soleniod pack on it on the basis that if it did not solve the problem, there would be no charge. it solved the problem, so you may want to think about it.

Hi Vats.
Thankyou for your answer. My Voyager has mad 140000 km's or 225000 miles. I have had the car for only 5 months, and it has been totally error free until now. I dont have the history for the car, so I dont know what has been replaced previously. I have the Haynes/Chilton repair manual, and I tried to find all the connectors involved with the Speed sensor etc. I could not find a problem, and all connections look really clean and nice. Unless a cable is broken somewhere, I beleive I have a "real" problem such as a bad sensor, or a faulty control box. I get the feeling that my main problem is the loss of speed sensing, and therefor the car goes into limp mode with only the second gear active. But on the other hand, I see no reason why my fuel gauge would act funny. One moment I had a 1/4 of gas, and the next moment I got warning that fuel is low. However, this seems to be stable now.

What did they charge for the solenoid pack?
Regards from Stockholm.

Hi again.
Does anyone now what was the solution for mcooke?
I have exactly the same symptoms and I am very interested to hear more about it. Thanks!

Regards from the other side of the world (Stockholm)

Hi Vats.
I just realized that I gave you the wrong km and mile figures.
My Voyager has run 140000 km, or 87500 miles.
Regards from Stockholm

The Solenoid pack was around $250.00. Does your van go into limp mode right away or does it run for a few minutes before going in?

Hi.
Was 250 usd inclusive the work? Or just the material?

To be honest, I'm not sure what limp mode is.
When I start, and put the gear selector to D, the only gear I get is 2'nd gear.
As I understand, this is because of a missing speed output for some reason, and the van does not know how fast I am going. Therefor the van decides to use 2'nd gear only. This is a good gear to start with, and I can travel in a fair speed (approx 35 mph) without having to many rpm's.

Is this limp mode?
Regards from Stockholm

was this resolved? Instrument cluster? I am also having similar problems, intermittently the gauges will die (bang on the dash usually brings em back but not always) and sometimes the van just wont start for maybe 24 hours.
Last time my gauges went out I brought them back and then the check engine light came on. Had the codes read and came up with a bad O2 sensor and p1698- no ccd from tcm and the reader said something about aux in-out.

btw just had the van tuned up at dealership and Bcm replaced ($$$$)

This may be the fix to the intermittent gauge problem (http://www.ingriddijkers.com/CaravanPics.html). The key here is banging on the dash provides a temporary fix to the cluster problem. I would fix this first.
Did you have the O2 sensor replaced?

When I start, and put the gear selector to D, the only gear I get is 2'nd gear.
As I understand, this is because of a missing speed output for some reason, and the van does not know how fast I am going. Therefor the van decides to use 2'nd gear only. This is a good gear to start with, and I can travel in a fair speed (approx 35 mph) without having to many rpm's.

Is this limp mode?

If it's not limp mode, it sure is the best imitation I have heard of. Have you changed the sensors? I would also check the cluster, same as petwaitress above. I think this is a 3ed gen problem and don't know if it was fixed for 2000, so it may not help.

Hi.
My symptoms right now is no reading on the speedometer, and Limp mode.
I'm pretty sure that the cluster is OK. A bad cluster should not force the transmission into Limp mode?
I will remove the speed sensor tomorrow, and measure it. I read the procedure on http://www.allpar.com/eek/dx-sensor.html
I'll let you know.......
Regards from Stockholm

Hi
sorry I haven't posted for a long time but I have been pretty busy lately. Just so everyone knows I still have not fixed the problem the van has been sitting in my driveway for almost a year and a half now as I work 2 jobs and don't have the time to do much with it I really don't trust the dealer in this town and don't have the time off to rent a trailer and tow it the 75 miles to the next nearest and I really can't afford it with the payment I have been making on this van and another on a different car and a family of 7. It still has the same issues, limp mode,no guages,all gear ranges lit etc. etc. It would be awesome if I could fix it so I'm not paying $200 a month for it to sit in the driveway.going out and starting it every day or two is really getting old.I will try the fix that webbee posted tomorrow and I am trying to decide if the solenoid pack could be the problem or the pcm? I've even considered buying a new wiring harness that goes from the tcm to the pcm and speed sensors but I'm afraid to know what that will cost. again I apoligize for not posting for so long and any help will be even more greatful than when I originally posted. thanks mcooke

I went out today and opened up the wiring harness where it runs in front of the transmission pan and found it full of transmission fluid it was kind of weird because I couldn't find where it was leaking from and it was only in that spot on the harness but it had quite a bit of fluid so I cleaned it out and dried the wires with a rag, I then found a bright green wire that didn't look broken but it was smashed up a bit so I cut out the bad part and replaced it with new and didn't see any other problems and put it back together hooked up the battery and took it for a drive. The service engine light was reset and the speedometer and all the other guages worked but the trans. still wouldn't shift out of second, after about 3 miles I pulled over and shut it off and waited for about a minute and restarted it and the ses light was back and the guages quit. If I disconnect the battery it resets the light and guages until I shut it off and restart it but the trans won't reset. Would the solenoid pack keep the trans. from communicating with the tcm and pcm? or should I try replacing the entire harness from the tcm to the pcm?

Hi mcooke.
I have not yet measured my speed sensor, because I found out that an old friend of mine is actually working for Chrysler here in the area, and I spoke to him today. He told me that my problem is most likely due to failing input or output speed sensor. I will visit him tomorrow (wednesday) and he will sell me 2 sensors for a good price. After replacing them tomorrow, I hope that my problem will be gone. If not, he will assist me with the search of the reason for the problem.

I will also ask him about your problem. He has a lot of experiance, and with some luck, he has some good ideas.
Hopefully I will have some news within 24 hours.

Regards from Stockholm

Hi again.
My problem is now solved!
I went to my friend at Chrysler, Stockholm , and he connected the "PC" to read the error codes. I had P0731, and it was indicating a problem with 1'st gear. Nothing mentioned the speed sensors, but since the output speed is needed to make the TCM sure about what gear to use, it was quite obvious that the speed sensor needed too be replaced. I bought both the input and the output sensor.
I took out the old output speed sensor, and measured the resistance between the 2 pins. It was infinite. (endless amount of ohm's). Since there are no free rotating parts, just the magnet inside the plastic body, I took another magnet and tried to get some kind of response from the sensor.
Nothing happened. I then measured the new output speed sensor, and I had 0,68 ohm's between the pins. When I moved the other magnet towards the sensor magnet, the values changed. Moving the magnet around gave me different readings, but all somewhere between 0,60 and 1,20 ohms.
So now i knew that the old sensor was bad!
After replacing the output sensor, the Voyager works perfectly.
Case closed!!

Regarding your problem, mcooke, my friend asked the following :
When you start the engine, and put it to D, does your Voyager start with 1'st gear, and after just a few meters, shift to the 2'nd gear?
Or does it use 2'nd gear from the very beginning? (after ignition off/on)
If it starts at 1'st gear, you would likely still have a problem with one or both speed sensors (or signals to and from them). Maybe you should try to measure them as I did?
If it starts with 2'nd gear after ignition off/on, you would likely have a problem with the solenoid pack. (or signals to and from)

I hope you will solve your problem. After all, the problem is really easy to fix, and probably not expensive. All you have to do is to find it !!? (All you have to .......???)
What I mean is that you should not give up, and you are welcome to give me more input, and I will pass it on to my friend.

Regards from Stockholm

Thanks for the information,It stays in second all the time from when I start to when I shut it off,If I disconnect the battery it will reset the service light and the speedo until I turn it off then the light comes back on and the speedo quits again but it stays in second all the time. I am going to change the solenoid pack next and see what happens but it will be about a week before I can get the time to do the work. Is there anything special that I need to do when I change it or is it just take off the old and put on the new kind of thing? Thanks again msrc I really appreciate your help.

thanks fkor the help, have 99 ply 3.0, changed speedo sensor and all is well, by the way the 99 has only one sensor. thanks don

[QUOTE=reddon231cars]thanks for the help, have 99 ply 3.0, changed speedo sensor and all is well, by the way the 99 has only one sensor. i am very appreciative for the help given. thanks don